I believe that the problem is in your if/else statement. you else statement is not supposed to have a condition which is the parenthesis. the else acts as a last resort that tells the user their answer doesn't fit what we are asking.

it might be your 'welcome to infinity'. if there was a specific text that it wanted you to use then you are probably going to have to use it. also you are missing a semicolon at the end of your last console.log